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How Do Vending Machines Tell the Difference Between Fake Coins and Real Coins?

One of my life dreams as a child was to be able to fool a vending machine with quarter-like objects. I mean, how smart could a vending machine be, right? Wrong. More like how dumb a kid I was. Vending machines use light sensors to measure the size of a coin and electromagnets to detect the metal type to determine what…

The U.S. killed the half-penny when it was worth what a dime is today

It seems like every week there's a new argument to remove the penny from circulation. But did you know that the U.S. once had a half-cent? When the U.S. stopped making them in 1857, they had the buying power of over a dime by today's standards. Which makes the most excellent case to scrap the penny, right now. And…

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Holy wow, you can actually swim like Scrooge McDuck in this bank vault

People of Earth, dreamers of the universe and possible alien organisms of the beyond: you can swim like Scrooge McDuck in a Swiss bank vault in real life. Like, literally swim in money. This is incredible. A bank safe swimming pool filled with 8 million Swiss coins is being auctioned off to the highest bidder who…